The 15th century tower appears to dominate the whole village, rising as it does almost directly from the road.  The tower has angled buttresses and a NE stair turret. It has a passage through the base of the tower, unique to Kent and relatively rare in England, with three bay rib vaulting.  The passage was probably made to allow the annual Corpus Christi procession around the Church without needing to go outside consecrated ground, as the tower forms part of the western boundary of the churchyard.  On the west side of the passage there is a large piece of sandstone with curious marks.  These were probably made by archers sharpening their arrows on the stone on their way to the butts for archery practice.  Alternatively they may be remnants of crosses which were often incised on external walls or perhaps wear from pilgrims marking what might have been a holy stone with the sign of the cross.

The clock was made in 1614 and is probably one of the oldest church clocks in the country.  It is still in excellent mechanical order.  It has a carillon (repeater) and is capable of playing one of five selectable tunes at selected hours.  The tunes were originally all hymns but in 1754 a popular song of the time "The Captain with his whiskers, took a sly glance at me." was substituted for one of the hymns.  In 1968 the clock winding mechanism was "improved" so that it could be wound by electric motors rather than hand winding which had to be carried out daily.  This was done without making any alteration to the clock mechanism.